On Fri, 08 Dec 2006 07:31:25 -0500, Cat Dancer wrote: > On 12/7/06, J. Garrett Morris <[EMAIL PROTECTED]> wrote: >> >> foo :: ErrorT String IO Int >> >> Since ErrorT String IO Int is not the same as IO, you can't use IO >> operations directly. In this case, you want: >> >> < a <- lift getLine >> >> You want: >> >> < r <- runErrorT foo >> > > Wow! I found your help terrific! Thank you! Can I give you some money?
I didn't see the original question, but there are some examples of this in the ConfigFile (formerly part of MissingH) docs here: http://software.complete.org/configfile/static/doc/Data-ConfigFile.html#12 After you read that, you'll probably also want to scroll back and look at the other examples of usage: http://software.complete.org/configfile/static/doc/Data-ConfigFile.html#9 to really give you a complete sense of the styles available. The Error monad is one of the really awesome things about Haskell, IMHO. -- John _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
